Journal
CERAMICS INTERNATIONAL
Volume 48, Issue 6, Pages 8051-8068Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2021.12.006
Keywords
Three-dimensional ultrasonic assistance; Diamond wire sawing; SiC; Sawing force; Wear; Surface integrity
Categories
Funding
- Fundamental Research Funds for the Central Universities [2018RC30]
Ask authors/readers for more resources
In this study, a novel 3D vibration assisted diamond wire sawing (DWS) system is developed and a theoretical model is established for predicting sawing forces. Experiments on silicon carbide (SiC) ceramics are carried out to investigate the effects of ultrasonic vibration assistance, input vibration direction, and cutting parameters on sawing forces, surface morphologies, and tool wear. The results show that 3D ultrasonic vibration provides the lowest sawing force, improved surface integrity, and reduced wear of the diamond wire saw.
Ultrasonic vibration assisted (UVA) cutting has been proven to be an effective method for improving machining behavior in processing hard and brittle materials. However, there is no investigation on three-dimensional (3D) UVA diamond wire sawing (DWS). In this paper, a novel 3D vibration assisted DWS system is developed. A theoretical model is established for predicating sawing forces. Experiments have been carried out on DWS of silicon carbide (SiC) ceramics. The effects of ultrasonic vibration assistance, input vibration direction and cutting parameters on sawing forces, surface morphologies and tool wear are studied respectively. The simulation results indicate that elliptical motion in 3D space can be obtained for the diamond abrasive. The experimental results reveal that the proposed model has sufficient accuracy to predict sawing forces. It is demonstrated that sawing forces can be reduced by ultrasonic vibration assistance either in vertical direction or in longitudinal direction. However, 3D ultrasonic vibration condition provides the lowest sawing force because of the combined advantages. Due to intermittent cutting mode, sawing forces are decreased by 31%, 40% and 29.8% in X, Y and Z direction, respectively. Because debris can be removed more easily from the contact surface and large ductile smooth area can be obtained, 3D ultrasonic vibration assistance generates higher surface integrity than that of traditional sawing process. Moreover, the wear of diamond wire saw can be effectively decreased.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available